Audio mode, function - GF82.85-P-2030SXJ

MODEL 216.3, 221.0/1 with CODE (498) Japan version up to Model Year 8 Radio; CD; Audio-DVD; MP3; Music Register; VICS

Shown on model 221 with code (810) Sound system

Fig 1: Audio Mode Function Diagram - Shown On Model 221 With Code (810)

Courtesy of MERCEDES-BENZ USA

Function requirements

All functions are available as of "circuit 15R ON" and Head Unit (HU) status "HU ON". In HU status "HU USER OFF", only the A/C display line is shown. The HU status is determined by the operating condition ("HU ON" or "HU USER OFF") last performed (Last mode). The driver information system can also be switched on by pressing the button "ON" (A40/9s6) at the front central operating unit, with the display being switched off after t = 30 min.

Operation via buttons on the multifunction steering wheel (MFL) and display in the instrument cluster are possible as of "circuit 15R ON".

Radio reception (FM, AM)

The audio tuner control unit is the central unit of the sound system and of the radio component. For reception of stations within the country-specific radio frequency band, the audio tuner control unit has 2 world receivers integrated into it. Radio signals are sent over a high frequency (HF) line straight from the rear window antenna amplifier module to the audio tuner control unit.

The interface for user guidance is generated by the COMAND controller unit and shown on the COMAND display.

Radio functions are:

Automatic interference suppression
Automatic and manual station search
Last station memory
FM station lists (2 x 6 stations per radio band can be saved per "Auto Preset" or stored manually)
Separate traffic information station in the AM frequency band
Automatic station search for traffic stations after the loss of a station (background scan)

Station selection options are:

automatic station search with scan function (the stations of one waveband are played for 8 s)
Station search via MFL
Manual station search
Station selection using list of stations

Station selection using numeric keyboard
Station selection using frequency input
Station selection from memory

Vehicle Information and Communication System (VICS)

Known as VICS, the Vehicle Information and Communication System is a radio service free of charge. The driver is provided with vital information by the VICS on the current traffic situation. Traffic jams and disruptions to traffic are displayed on the map and incorporated into the dynamic destination-oriented navigation.

The radio antenna signal is received by the rear window antenna amplifier module and transmitted to the COMAND controller unit via the audio tuner control unit. There, the information contained in the radio antenna signal is processed by the integrated FM [UKW] multiplexer. Next, the information is shown on the COMAND display. Apart from this, the FM multiplexer can also receive additional information, e.g. on the weather or earthquakes.

Playing CDs and audio DVDs

The DVD changer integrated into the COMAND controller unit supports the following media and formats:

DVD video
DVD audio
CD audio
CD-ROM
CD-R
CD-R/W
MP3

The DVD disk drive is located in the COMAND controller unit and is freely accessible. Apart from this, the DVD disk drive also contains the "DVD DiscAutoDetect" function. All CD and DVD functions can be operated via the Man-Machine-Interface (MMI).

Via menu, control is possible of:

Audio CDs and DVDs
Video DVDs

Music register

The "Music register" function enables audio CDs to be stored on the hard disk in the COMAND controller unit. Up to approx. 100 CDs can be stored in Advanced Audio Coding (AAC) format (compressed). The COMAND controller unit in combination with the integrated DVD changer provides the following functions along with audio signal playback:

"Scan" function, the tracks of one CD or the 1st track of each CD in the entire magazine are played for t = 8 s. After this has been run through completely, the scan function is automatically terminated.
"Random" function, all titles on one CD or all titles on all CDs in the magazine are played according to a random principle.
"Repeat" function, alternatively, one title or one CD or all CDs in the magazine are repeated.
"Skip forward and back" function, a jump is made forward or back to the next or preceding title; in doing so, no audio signals are audible.
"Music search" function, during music search, the music played can be heard. This enables certain sections of a track to be played or skipped.
"Track list" function, the desired track is selected with the aid of the front central operating unit on the COMAND display and confirmed.

In addition to the listed functions, supplemental information is shown on the COMAND display (e.g. playing time, track list and name of the performer).

Front central operating unit, component description		GF54.21-P-4500SX
Cockpit central display, component description		GF54.30-P-6100SX
Rear window antenna module component description		GF82.62-P-3131SXJ
Rear window antenna component description		GF82.62-P-3123SX
Audio tuner control unit, component description	Model 221.0/1 except code (810) Sound system	GF82.62-P-3132SX
Audio tuner control unit, component description	Model 221.0/1 with code (810) Sound system Model 216.3	GF82.62-P-3132SXS
Speaker system, component description	Model 221.0/1 except code (810) Sound system	GF82.62-P-4220SX
Speaker system, component description	Model 221.0/1 with code (810) Sound system Model 216.3	GF82.62-P-4220SXS
COMAND controller unit, component description		GF82.85-P-3136SXJ